What are some good books on swimming pool care?

Some of these books also include ideas for landscaping around your pool. What Color Is Your Swimming Pool? A Homeowner's Guide to Troublefree Pool, Spa & HotTub Maintenance The Ultimate Pool Maintenance Manual: Spas, Pools, Hot Tubs, Rockscapes and Other Water Features, 2nd Edition The Complete Swimming Pool Reference, Second Edition Pool and Spa Maintenance Your Answers to Pool and Spa Care Maintenance Complete Guide to Swimming Pool Care Poolscaping: Gardening and Landscaping Around Your Swimming Pool and Spa Swimming Pool Pools & Spas : Ideas for Planning, Designing, and Landscaping Gardening with Water : How James van Sweden and Wolfgang Oehme Plant Fountains, Lily Pools,Swimming Pools, Ponds...